feat(#29): mashup

* update templates to be more responsive

database/migrations/2025_06_10_211056_add_mashup_to_playlist_items_table.php

@@ -0,0 +1,22 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::table('playlist_items', function (Blueprint $table) {
+            $table->json('mashup')->nullable();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('playlist_items', function (Blueprint $table) {
+            $table->dropColumn('mashup');
+        });
+    }
+};